Rubberlike materials from di-hydroxyalkyl sulphides



Patented June 19, 1945 UNITED STATES PATENT OFFICE BUBBERLIKE MATERIALS FROM DI-HYDBOXYALKYL SULPHIDES Tadao Okita, Imazucho, Nishinomiya, Japan;

vested in the Alien Property Custodian No Drawing.

Claims.

The present application is a continuation in part of my prior copending application Serial No. 94,194, filed August 4, 1936, for Rubberlike materials from di-hydroxyalkyl sulphides.

The present invention relates to the method Oil-proof rubber-like materials have hitherto.

been manufactured mainly by the working of saturated halide of hydrocarbon of a rather 'low molecular weight in water or in alkaline solvent upon the materials generative of sulphur such as alkali sulphides or alkaline earth metal sulboric acid anhydride, potassium bisulphate, zinc chloride, tin chloride and other metallic halides such as mercury chloride, calcium chloride, b0.-

ron fluoride or ammonium chloride upon the chemicals which are expressed by [(Ho)CnH2n]2S.r

(where n and a: are positive integers in this case). For example, by heating at'150 C. for an hour the mixtures of 100 grams of dihydroxyethyl disulphide and 100 grams of concentrated sulphuric acid, about '80 grams of rubber-like material can be obtained, which is of great elasticity. and oilproof property, and also of far less ofiensive'odor than the one-manufactured from ethylene chloride. In addition to the use of dihydroxy ethyl disulphide given above, either dihydroxy butyl disulphide or dihydroxy ethyl totrasulphide may be employed.

In practising my invention the integer 11. should be-chosen between land 6 (and preferably between 2 and 5) while the integer a should be chosen between a and-4. It will be understood.

Application November 29, 1939, Serial No. 306,683

that whenever an integer is herein defined as being between two limiting numbers the range of values of such integer is to be taken as including both the limiting numbers.

Although I have shown and described certain embodiments of my invention for the purpose of illustration, it will be understood generally that adaptations, alterations a n d modifications thereof occurring to one skilled in the art may be made without departing from the scope of my invention as defined in the appended claims.

What is claimed is:

1. The method of manufacturing rubber-like materials bymixing a compound of the following formula:

I CHiCHxCHiCHsOH CHnOHzCHaCHaOH with an inorganic acid from the group consisting of concentrated sulphuric, acid, phosphoric acid, and arsenic acid, and maintaining said mixture at a reactive temperature of the order of C;

2. The method of manufacturing rubber-like materials by mixing a compound of the general formula, [HO)C1.HznlaS= where n is between 1 and 6, and a: is between 2 and 4, with an inorganic acid from the group consisting of concentrated sulphuric acid, phosphoric acid, and arsenic acid, andmaintaining said mixture at a reactive temperature of the order of 150 C.

3. The method of manufacturing a rubber-like material by mixing equal parts by weight of a compound of the formula.

CHaCHaCHaCHaOH CHiCHsCHzCHaOH and concentrated sulphuric acid and maintaining said mixture at a reactive temperature of the order of 150 0.

perature of the order of 150 C.

" T. OKI'I'A. 

